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FR861198A Expired / Lapsed FR ⏱️ 0.0 years remaining

Improvements to systems for excitation and raising the light output of luminescent tubes and lighting device comprising these improved systems

Assignee: Andre Philippe Clouez
•
Filing: 1939-07-21
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Granted: 1941-02-03
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Expires: 1959-07-21
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Abstract

No abstract record available.

Inventors

  • 👤 Andre Philippe Clouez

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-10-22 23:12
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/22

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